Mitsubishi Electric Melservo MR-J3-100B, Handbook

Page: 246 / 590

Part 5: Review on Replacement of MR-J3-DU_ with MR-J4-DU_
5 - 51
(3) When fabricating a cable
Prepare MR-J2CN1-A connector set, the recommended wires, and fabricate the cable according to the
wiring diagram in (2) in this section.
Model
Length
[m]
Core
size
[mm 2 ]
Number
of cores
Characteristics of one core
Cable
OD
[mm]
(Note 2)
Wire model
Structure
[Wires/mm]
Conductor
resistance
[ Ω /km]
Insulator
OD d [mm]
(Note 1)
MR-J3CDL05M 0.5 0.08
20
(10
pairs)
7/0.127 222 or less 0.38 6.1
UL 20276 AWG#28
10pair (cream)
Note 1. The following shows the detail of d.
Insulator Conductor
d
2. Standard OD. Maximum OD is about 10% greater.
7.2 Selection example of wires
POINT
To comply with the IEC/EN/UL/CSA standard, use the wires refer to "MR-J3-
_A_/MR-J3-_B_ Servo amplifier instruction manual" and "MR-CV_/MR-
CR55K_/MR-J4-DU_(-RJ) instruction manual".To comply with other standards,
use a wire that is complied with each standard.
Selection conditions of wire size are as follows.
Construction condition: Single wire set in midair
Wire length: 30 m or less (J3 series)
50 m or less (J4 series)
7.2.1 MR-J3 series, power supply wire size
For the power supply wire, use a 600 V grade heat-resistant polyvinyl chloride insulated wire (HIV wire).
The following diagram shows the wires used for wiring. Use the wires or equivalent given in this section.
Converter unit Drive unit Servo motor
C
P
1
P
2
L
1
L
2
L
3
L
11
L
21
V
U
W
V
U
W
Motor
Encoder
OHS1
OHS2
Cooling fan
BU
BV
BW
L
11
L
21
2) Control power supply lead
3) Motor power supply lead
6) Thermal relay
Encoder cable
5) Cooling fan
lead
3)
Power supply
1)
Power factor
improving
DC reactor
4) Regenerative option lead
Regenerative option
1) Main circuit power
supply lead
Power supply
Thermal
relay